Regarding the Touch Paddle with which I have had great success... others I have tried were as others have reported, but this one has been perfect. It has adjustable response with a pot on each lever. I have used it in the dry sou9thwestern climate, and I have used it in a rain storm, in the snow, in the cold and in the heat. It has never failed. It is on a tiny board the size of a postage stamp and came from CWTOUCHKEYERS.COM I have built three of them and they all work flawlessly. NONE of the problems others are reporting for other keyers have been a problem with this one.
Also built one of his larger versions, mounted it on a slab of soapstone. It, too, operates flawlessly.
I am thunderstruck to learn that the maker of these wonderful keys, WA1JOS, became a silent key in August.